Patent US3178600A successfully refreshed from Google Patents.
US3178600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor structure including spherical windings
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-12-13
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Granted: 1965-04-13
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Expires: 1981-12-13
Abstract
No abstract record available.
Inventors
- 👤 Naum S Bers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:52
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A SPHERICAL INDUCTION MOTOR COMPRISING: A STATOR; AT LEAST TWO SPHERICAL WINDINGS MOUNTED ON SAID STATOR, SAID WINDINGS ADAPTED TO BE EXCITED BY POLYPHASE ALTERNATING CURRENT; AND AT LEAST ONE ADJACENT AND CONCENTRIC SPHERICAL ROTOR WINDING HAVING TOW END PORTIONS, SAID ROTOR WINDINGS BEING DISPOSED SYMMETRICALLY ABOUT A RADIAL AXIS OF SAID SPHERICAL ROTOR TO PRODUCE EQUALLY SPACED POINTS AT THE INTERSECTION OF THE LINE PROJECTIONS OF EACH TURN ON SAID AXIS, SAID ROTOR WINDINGS INCLUDING A CONNECTION ACROSS SAID END PORTIONS, SAID CONNECTION COMPRISING A PATH OF LOW IMPEDANCE RELATIVE TO THE IMPEDANCE OF SAID ROTOR WINDING.
Claim 2
Dependent Claim
98 words
A SPHERICAL INDUCTION MOTOR COMPRISING: A STATOR; AT LEAST TWO SPHERICAL WINDINGS MOUNTED ON SAID STATOR, SAID WINDINGS ADAPTED TO BE EXCITED BY POLYPHASE ALTERNATING CURRENT; AND AT LEAST ONE ADJACENT AND CONCENTRIC SPHERICAL ROTOR WINDING HAVING TOW END PORTIONS, SAID ROTOR WINDINGS BEING DISPOSED SYMMETRICALLY ABOUT A RADIAL AXIS OF SAID SPHERICAL ROTOR TO PRODUCE EQUALLY SPACED POINTS AT THE INTERSECTION OF THE LINE PROJECTIONS OF EACH TURN ON SAID AXIS, SAID ROTOR WINDINGS INCLUDING A CONNECTION ACROSS SAID END PORTIONS, SAID CONNECTION COMPRISING A PATH OF LOW IMPEDANCE RELATIVE TO THE IMPEDANCE OF SAID ROTOR WINDING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |